./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ab66f9f89348f915f5a709aa03ac6e16c276dad15b53c460d26f0885e78d4ce7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 23:33:13,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 23:33:13,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 23:33:13,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 23:33:13,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 23:33:13,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 23:33:13,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 23:33:13,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 23:33:13,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 23:33:13,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 23:33:13,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 23:33:13,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 23:33:13,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 23:33:13,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 23:33:13,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 23:33:13,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 23:33:13,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 23:33:13,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 23:33:13,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 23:33:13,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 23:33:13,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 23:33:13,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 23:33:13,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 23:33:13,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 23:33:13,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 23:33:13,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 23:33:13,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 23:33:13,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 23:33:13,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 23:33:13,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 23:33:13,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 23:33:13,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 23:33:13,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 23:33:13,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 23:33:13,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 23:33:13,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 23:33:13,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 23:33:13,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 23:33:13,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 23:33:13,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 23:33:13,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 23:33:13,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 23:33:13,752 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 23:33:13,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 23:33:13,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 23:33:13,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 23:33:13,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 23:33:13,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 23:33:13,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 23:33:13,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 23:33:13,754 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 23:33:13,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 23:33:13,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 23:33:13,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 23:33:13,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 23:33:13,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 23:33:13,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 23:33:13,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 23:33:13,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 23:33:13,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:33:13,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 23:33:13,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 23:33:13,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 23:33:13,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 23:33:13,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 23:33:13,758 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 23:33:13,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 23:33:13,759 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 23:33:13,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 23:33:13,759 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 23:33:13,759 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab66f9f89348f915f5a709aa03ac6e16c276dad15b53c460d26f0885e78d4ce7 [2023-02-18 23:33:13,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 23:33:13,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 23:33:13,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 23:33:13,940 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 23:33:13,941 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 23:33:13,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2023-02-18 23:33:14,850 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 23:33:15,008 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 23:33:15,008 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2023-02-18 23:33:15,012 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3a5fb50/9ce59ec5d8d042f79cbf87e863431f72/FLAGa184a73f7 [2023-02-18 23:33:15,026 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3a5fb50/9ce59ec5d8d042f79cbf87e863431f72 [2023-02-18 23:33:15,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 23:33:15,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 23:33:15,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 23:33:15,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 23:33:15,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 23:33:15,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f997586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15, skipping insertion in model container [2023-02-18 23:33:15,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 23:33:15,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 23:33:15,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:33:15,269 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 23:33:15,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:33:15,301 INFO L208 MainTranslator]: Completed translation [2023-02-18 23:33:15,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15 WrapperNode [2023-02-18 23:33:15,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 23:33:15,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 23:33:15,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 23:33:15,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 23:33:15,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,338 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-02-18 23:33:15,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 23:33:15,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 23:33:15,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 23:33:15,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 23:33:15,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 23:33:15,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 23:33:15,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 23:33:15,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 23:33:15,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (1/1) ... [2023-02-18 23:33:15,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:33:15,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:33:15,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 23:33:15,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 23:33:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 23:33:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 23:33:15,442 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 23:33:15,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 23:33:15,550 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 23:33:15,554 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 23:33:15,568 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 23:33:15,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:33:15 BoogieIcfgContainer [2023-02-18 23:33:15,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 23:33:15,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 23:33:15,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 23:33:15,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 23:33:15,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 11:33:15" (1/3) ... [2023-02-18 23:33:15,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32775862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:33:15, skipping insertion in model container [2023-02-18 23:33:15,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:33:15" (2/3) ... [2023-02-18 23:33:15,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32775862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:33:15, skipping insertion in model container [2023-02-18 23:33:15,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:33:15" (3/3) ... [2023-02-18 23:33:15,576 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig3.c [2023-02-18 23:33:15,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 23:33:15,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-18 23:33:15,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 23:33:15,657 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21371017, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 23:33:15,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-18 23:33:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 23:33:15,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:15,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 23:33:15,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 23:33:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash 28699945, now seen corresponding path program 1 times [2023-02-18 23:33:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:15,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646672644] [2023-02-18 23:33:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:33:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:33:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:33:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646672644] [2023-02-18 23:33:15,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646672644] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:33:15,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:33:15,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:33:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461554670] [2023-02-18 23:33:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:33:15,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:33:15,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:33:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:33:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:33:15,848 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:33:15,863 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-02-18 23:33:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:33:15,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-18 23:33:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:33:15,869 INFO L225 Difference]: With dead ends: 29 [2023-02-18 23:33:15,869 INFO L226 Difference]: Without dead ends: 16 [2023-02-18 23:33:15,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:33:15,873 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:33:15,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:33:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-18 23:33:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2023-02-18 23:33:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-02-18 23:33:15,891 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2023-02-18 23:33:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:33:15,891 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-02-18 23:33:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-02-18 23:33:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 23:33:15,892 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:15,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 23:33:15,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 23:33:15,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 23:33:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:15,894 INFO L85 PathProgramCache]: Analyzing trace with hash 28699753, now seen corresponding path program 1 times [2023-02-18 23:33:15,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:15,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872221178] [2023-02-18 23:33:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:33:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:33:15,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:33:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872221178] [2023-02-18 23:33:15,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872221178] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:33:15,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:33:15,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:33:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031264393] [2023-02-18 23:33:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:33:15,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:33:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:33:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:33:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:33:15,916 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:33:15,926 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-02-18 23:33:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:33:15,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-18 23:33:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:33:15,927 INFO L225 Difference]: With dead ends: 16 [2023-02-18 23:33:15,927 INFO L226 Difference]: Without dead ends: 14 [2023-02-18 23:33:15,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:33:15,929 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:33:15,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:33:15,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-18 23:33:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-18 23:33:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-18 23:33:15,931 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2023-02-18 23:33:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:33:15,931 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-18 23:33:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-18 23:33:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 23:33:15,932 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:15,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 23:33:15,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 23:33:15,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 23:33:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash 889698349, now seen corresponding path program 1 times [2023-02-18 23:33:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:15,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594235879] [2023-02-18 23:33:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:33:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:33:15,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:33:15,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594235879] [2023-02-18 23:33:15,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594235879] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:33:15,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:33:15,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:33:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014958155] [2023-02-18 23:33:15,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:33:15,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:33:15,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:33:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:33:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:33:15,957 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:33:15,976 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-02-18 23:33:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 23:33:15,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 23:33:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:33:15,977 INFO L225 Difference]: With dead ends: 26 [2023-02-18 23:33:15,978 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 23:33:15,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 23:33:15,979 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:33:15,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:33:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 23:33:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2023-02-18 23:33:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-18 23:33:15,982 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2023-02-18 23:33:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:33:15,982 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-18 23:33:15,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-18 23:33:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 23:33:15,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:15,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 23:33:15,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 23:33:15,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 23:33:15,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash 889692391, now seen corresponding path program 1 times [2023-02-18 23:33:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:15,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956804233] [2023-02-18 23:33:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:15,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:33:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:33:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:33:16,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956804233] [2023-02-18 23:33:16,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956804233] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:33:16,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:33:16,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:33:16,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670702249] [2023-02-18 23:33:16,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:33:16,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:33:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:33:16,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:33:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:33:16,009 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:33:16,022 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-02-18 23:33:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:33:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 23:33:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:33:16,023 INFO L225 Difference]: With dead ends: 18 [2023-02-18 23:33:16,023 INFO L226 Difference]: Without dead ends: 17 [2023-02-18 23:33:16,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 23:33:16,025 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:33:16,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 9 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:33:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-18 23:33:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-02-18 23:33:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-02-18 23:33:16,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2023-02-18 23:33:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:33:16,028 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-02-18 23:33:16,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:33:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-02-18 23:33:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 23:33:16,029 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:16,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:33:16,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 23:33:16,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 23:33:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash 301623279, now seen corresponding path program 1 times [2023-02-18 23:33:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:16,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944347515] [2023-02-18 23:33:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 23:33:16,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 23:33:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 23:33:16,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 23:33:16,050 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 23:33:16,051 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-02-18 23:33:16,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-02-18 23:33:16,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-02-18 23:33:16,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-02-18 23:33:16,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-02-18 23:33:16,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-02-18 23:33:16,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 23:33:16,055 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-02-18 23:33:16,057 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 23:33:16,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 11:33:16 BoogieIcfgContainer [2023-02-18 23:33:16,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 23:33:16,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 23:33:16,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 23:33:16,071 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 23:33:16,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:33:15" (3/4) ... [2023-02-18 23:33:16,073 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 23:33:16,091 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 23:33:16,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 23:33:16,092 INFO L158 Benchmark]: Toolchain (without parser) took 1063.03ms. Allocated memory is still 155.2MB. Free memory was 126.2MB in the beginning and 64.7MB in the end (delta: 61.6MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-02-18 23:33:16,092 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 23:33:16,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.83ms. Allocated memory is still 155.2MB. Free memory was 126.2MB in the beginning and 117.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 23:33:16,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.70ms. Allocated memory is still 155.2MB. Free memory was 117.1MB in the beginning and 115.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 23:33:16,093 INFO L158 Benchmark]: Boogie Preprocessor took 20.50ms. Allocated memory is still 155.2MB. Free memory was 115.8MB in the beginning and 115.0MB in the end (delta: 778.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 23:33:16,093 INFO L158 Benchmark]: RCFGBuilder took 210.17ms. Allocated memory is still 155.2MB. Free memory was 114.2MB in the beginning and 104.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 23:33:16,094 INFO L158 Benchmark]: TraceAbstraction took 498.68ms. Allocated memory is still 155.2MB. Free memory was 103.7MB in the beginning and 66.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-02-18 23:33:16,094 INFO L158 Benchmark]: Witness Printer took 20.45ms. Allocated memory is still 155.2MB. Free memory was 66.0MB in the beginning and 64.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 23:33:16,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.83ms. Allocated memory is still 155.2MB. Free memory was 126.2MB in the beginning and 117.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.70ms. Allocated memory is still 155.2MB. Free memory was 117.1MB in the beginning and 115.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.50ms. Allocated memory is still 155.2MB. Free memory was 115.8MB in the beginning and 115.0MB in the end (delta: 778.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 210.17ms. Allocated memory is still 155.2MB. Free memory was 114.2MB in the beginning and 104.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 498.68ms. Allocated memory is still 155.2MB. Free memory was 103.7MB in the beginning and 66.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 20.45ms. Allocated memory is still 155.2MB. Free memory was 66.0MB in the beginning and 64.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 VAL [old_x=2147483647, old_y=2, x=0, y=2] [L22] old_x + 1 VAL [old_x=2147483647, old_y=2, x=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 50 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-18 23:33:16,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)